engr_survey4: Calculate the Station Distance between Engineering Survey...

In iemisc: Irucka Embry's Miscellaneous Functions

Calculate the Station Distance between Engineering Survey Points

Description

Takes engineering survey points in various units (foot, US survey foot, meters, or kilometers) and determines the upstream station location.

Usage

engr_survey4(
  object,
  ds_station,
  station_distance = 100,
  units = c("foot", "survey_ft", "survey_mile", "mile", "meters", "kilometers")
)

Arguments

object	numeric vector that contains the upstream length
ds_station	character vector that contains the ending engineering survey station value
station_distance	numeric vector that contains the horizontal distance between any 2 points along the survey, the default is 100 feet
units	character vector that contains the system of units for the station_distance (options are foot, survey_ft (United States Customary System) [US survey foot], meters for International System of Units meters, or kilometers for International System of Units kilometers

Value

the final engineering survey position (ex. Sta. 5+55)

Author(s)

Irucka Embry

Source

r - Insert a character at a specific location in a string - Stack Overflow answered and edited by Justin on Dec 13 2012. See https://stackoverflow.com/questions/13863599/insert-a-character-at-a-specific-location-in-a-string.

References

1. udunits.dat, v 1.18 2006/09/20 18:59:18 steve Exp, https://web.archive.org/web/20230202155021/https://www.unidata.ucar.edu/software/udunits/udunits-1/udunits.txt. Retrieved thanks to the Internet Archive: Wayback Machine

2. Engineer Boards: Transportation. "Stationing. Dumb question?" Question asked by By NIKE, August 31, 2013 and answered by ptatohed on September 1, 2013. See https://engineerboards.com/threads/stationing-dumb-question.21935/.

Examples

# Please refer to the iemisc: Engineering Survey Examples vignette for
# additional examples
 
library(iemisc)

# Example 1

# "Conversely, if you were asked at what station a manhole 555 ft upstream of
# Sta 0+00 is, your answer would be 0.00 sta + 555 ft / 100 ft/sta = 5.55 sta =
# Sta 5+55." Source: Reference 2

engr_survey4(555, "0+00", units = "foot")

iemisc documentation built on Sept. 25, 2023, 5:09 p.m.